عنوان مقاله [English]
In this paper, the effects of temperature on the refractive index layer of magnesium fluoride, MgF2, is investigated. The layers, using the electron gun, in temperatures of different 25,100,200,300 °C and were deposited on the glass substrate (BK7). In all samples, the deposition rate was Å/C. Transmission spectra of samples, using a spectrophotometer at wavelengths 400-800nm were determined. The sample produced at room temperature was annealed for 2 hours at 300°C. Then, indexes of refraction of samples were calculated using three methods. The refractive indexes according to the methods were in a good agreement with one another. The results showed that by increasing the temperature from laboratory temperature to 300 °C, the refractive index of magnesium fluoride increased as a linear function from n=1.32 to n=1.39. Moreover, the index of refraction of the annealed sample increased conspicuously while the annealed sample showed some absorption.
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